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Fair Value of Derivative and Other Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value of Derivative and Other Financial Instruments [Line Items]

Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

A reconciliation of the changes in Level 3 fair value measurements for PNMR is as follows. PNM had no Level 3 fair value measurements during the three months ended March 31, 2012 and 2011.

	PNMR
	Three Months Ended March 31,
	2012				2011
	(In thousands)
Balance at beginning of period	$	—			$	(822	)
Total gains (losses) included in earnings	—				1,550
Purchases	—				118
Settlements	—				48
Balance at end of period	$	—			$	894
Total gains (losses) included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the end of the period	$	—			$	1,716

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying amounts and fair values of investments in PVNGS lessor notes, other investments, and long-term debt, which are not recorded at fair value on the Condensed Consolidated Balance Sheets are presented below:

									GAAP Fair Value Hierarchy(1)
	Carrying Amount				Fair Value				Level 1				Level 2				Level 3
March 31, 2012	(In thousands)
PNMR
Long-term debt	$	1,674,179			$	1,910,127			$	—			$	1,905,073			$	5,054
Investment in PVNGS lessor notes	$	89,530			$	93,340			$	—			$	—			$	93,340
Other investments	$	10,612			$	13,547			$	864			$	—			$	12,683
PNM
Long-term debt	$	1,215,550			$	1,346,094			$	—			$	1,346,094			$	—
Investment in PVNGS lessor notes	$	89,530			$	93,340			$	—			$	—			$	93,340
Other investments	$	2,734			$	2,889			$	546			$	—			$	2,343
TNMP
Long-term debt	$	311,120			$	401,697			$	—			$	401,697			$	—
Other investments	$	267			$	267			$	267			$	—			$	—
December 31, 2011
PNMR
Long-term debt	$	1,674,013			$	1,873,002
Investment in PVNGS lessor notes	$	107,094			$	108,742
Other investments	$	12,207			$	14,208
PNM
Long-term debt	$	1,215,540			$	1,294,846
Investment in PVNGS lessor notes	$	107,094			$	108,742
Other investments	$	2,900			$	3,052
TNMP
Long-term debt	$	310,963			$	413,966
Other investments	$	271			$	271

PNMR and PNM [Member]

Fair Value of Derivative and Other Financial Instruments [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Commodity derivative instruments are summarized as follows:

	Economic Hedges
	March 31, 2012				December 31, 2011
PNMR and PNM	(In thousands)
Current assets	$	7,003			$	3,713
Deferred charges	799				—
	7,802				3,713
Current liabilities	(2,169		)		(1,632		)
Long-term liabilities	(2,568		)		(2,437		)
	(4,737		)		(4,069		)
Net	$	3,065			$	(356	)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

The following table presents the effect of commodity derivative instruments on earnings, excluding income tax effects.

	Economic Hedges
	Three Months Ended March 31,
	2012				2011
PNMR	(In thousands)
Electric operating revenues	$	5,218			$	1,144
Cost of energy	(604		)		4,680
Total gain	$	4,614			$	5,824
PNM
Electric operating revenues	$	5,218			$	1,144
Cost of energy	(604		)		443
Total gain	$	4,614			$	1,587

Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]

Commodity contract volume positions are presented in Decatherms for gas related contracts and in MWh for power related contracts. The table below presents PNMR’s and PNM’s net buy (sell) volume positions:

	Economic Hedges
	Decatherms			MWh
March 31, 2012
PNMR and PNM	1,275,000			(1,390,722	)
December 31, 2011
PNMR and PNM	1,499,000			(366,448	)

Schedule of Collateral Related to Derivative [Table Text Block]

Net exposure is the net contractual liability for all contracts, including those designated as normal purchases and sales, offset by existing cash collateral and by any offsets available under master netting agreements, including both asset and liability positions.

Contingent Feature – Credit Rating Downgrade		Contractual Liability				Existing Cash Collateral				Net Exposure
		(In thousands)
March 31, 2012
PNMR and PNM		$	4,613			$	—			$	4,613
December 31, 2011
PNMR and PNM		$	4,036			$	—			$	4,036

Available-for-sale Securities [Table Text Block]

The fair value and gross unrealized gains of investments in available-for-sale securities are presented in the following table.

	March 31, 2012								December 31, 2011
	Unrealized Gains				Fair Value				Unrealized Gains				Fair Value
					(In thousands)
Equity securities:
Domestic value	$	4,712			$	27,974			$	3,549			$	25,143
Domestic growth	24,998				63,261				16,714				52,187
International and other	1,014				13,026				662				12,754
Fixed income securities:
Municipals	3,081				41,723				2,861				41,463
U.S. Government	954				24,675				1,353				25,367
Corporate and other	892				10,347				742				9,171
Cash investments	—				2,705				—				2,766
	$	35,651			$	183,711			$	25,881			$	168,851

The proceeds and gross realized gains and losses on the disposition of available-for-sale securities for PNMR and PNM are shown in the following table. Realized gains and losses are determined by specific identification of costs of securities sold.

	Three Months Ended
	March 31,
	2012				2011
	(In thousands)
Proceeds from sales	$	26,760			$	48,120
Gross realized gains	$	2,332			$	4,790
Gross realized (losses)	$	(738	)		$	(1,728	)

Investments Classified by Contractual Maturity Date [Table Text Block]

At March 31, 2012, the available-for-sale and held-to-maturity debt securities had the following final maturities:

	Fair Value
	Available-for-Sale				Held-to-Maturity
	PNMR and PNM				PNMR				PNM
	(In thousands)
Within 1 year	$	2,057			$	2,342			$	2,342
After 1 year through 5 years	21,281				100,387				93,340
After 5 years through 10 years	12,185				2,088				—
Over 10 years	41,222				—				—
	$	76,745			$	104,817			$	95,682

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

Items recorded at fair value on the Condensed Consolidated Balance Sheets are presented below:

					GAAP Fair Value Hierarchy
	Fair Value				Level 1				Level 2				Level 3
March 31, 2012					(In thousands)
PNMR and PNM
NDT investments
Cash and equivalents	$	2,705			$	2,705			$	—			$	—
Equity securities:
Domestic value	27,974				27,974				—				—
Domestic growth	63,261				63,261				—				—
International and other	13,026				13,026				—				—
Fixed income securities:
U.S. government	24,675				20,714				3,961				—
Municipals	41,723				—				41,723				—
Corporate and other	10,347				—				10,347				—
Total NDT investments	$	183,711			$	127,680			$	56,031			$	—
Commodity derivative assets	$	7,802			$	—			$	7,802			$	—
Commodity derivative liabilities	(4,737		)		—				(4,737		)		—
Net	$	3,065			$	—			$	3,065			$	—
December 31, 2011
PNMR and PNM
NDT investments
Cash and equivalents	$	2,766			$	2,766			$	—			$	—
Equity securities:
Domestic value	25,143				25,143				—				—
Domestic growth	52,187				52,187				—				—
International and other	12,754				12,754				—				—
Fixed income securities:
U.S. government	25,367				21,409				3,958				—
Municipals	41,463				—				41,463				—
Corporate and other	9,171				—				9,171				—
Total NDT investments	$	168,851			$	114,259			$	54,592			$	—
Commodity derivative assets	$	3,713			$	—			$	3,713			$	—
Commodity derivative liabilities	(4,069		)		—				(4,069		)		—
Net	$	(356	)		$	—			$	(356	)		$	—

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- Definition

Tabular disclosure of the notional amounts of outstanding derivative positions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic 815

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (d)

-Name Accounting Standards Codification

-Paragraph 1A

-Section 50

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

+ Details

Name:	us-gaap_ScheduleOfNotionalAmountsOfOutstandingDerivativePositionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration